Burner



R. A. GRIM.

BURNER.

APPLICATION FILED JUNE 30. 1921.

Patented. Aug. 8, 19 2240 2 SHEETSSHEET 2- R. A. GRHVI.

BURNER.

' APPLICATION FILED JUNE 30.1921.

Patented Au". 8, 1922.

WITNESSES EOEERT @3131, @E" EPAUL,

nuns.

Specification of Letters Aug t3,

Application filed lune 3(1 H921, Serial filo. 481,719.

To all whom it may concern.

Be it known that I, Bonner Asrrnnr GRIM, a citizen of the United States, and a resident of St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Burners, of which the following is a specification.

The present invention relates in general to burners, and more particularly to an oil burner especially adapted for use with dornestic oil cook stoves.

The object of the invention is to provide a burner of this character wherein the fuel oil is vaporized, and the air is preheated and mixed with the vaporized oil to obtain a proper mixture, which is completely consumed to generate a maximum amount of heat and wherein the heat is efficiently radiated over a relatively large area, the heat retained in the products of combustion being utilized to assist in bringing about these results.

Another object is to provide aburner having these features and which is of simple and durable construction, reliable in operation, easy and inexpensive to manufacture and readily .demountable for purposes of cleaning, replacement and repair.

@ther objects and advantages of the invention reside in certain novel features of construction, combination and arrangement of parts which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawings forming part of this specification, and in which:

Figure 1 is a perspective view of the invention embodied in a stove of the domestic oil cook stove type, parts being broken away and shown in section for the sake of illustration;

Figure 2 is a view in vertical section of the burner;

Figure 3 is a detail perspective view of the fuel distributor;

Figure dis a group view in vertical section illustrating the parts of the burner in position prior to assembly; and

' Figure 5 is a view of the burner in horizontal section;

Referring to the drawings wherein for the sake of illustration, is shown the preferred embodiment of the invention, the numeral designates the stove which may be of the domestic oil cook stove type. The

stove includes side walls 11, one of which is provided with an air inlet 12, and a top 13 having lids it. 1

A. wall or partition, designated generally at 1 6, is arranged within the stove and comprises a curved portion 17 constituting a bowl. and having a central opening 18 and an ofitalre 19 leading from the bowl 1? to the flue. The bowl defines the main fire chamber of the stove and the ollake 19 extends transversely of the stove and beneath one or more of the lids and constitutes an auxiliary fire chamber.

A burner, designated generally 25, is arranged in the main fire chamber, being supported in the central opening of the bowl, and is supplied with fuel, preferably oil, from a tank 26 by means of a pipe 2?. A connection 28 couples the fuel pipe with the burner and the upper end of the connection is flanged, as at 29, to provide a seat for the burner.

The burner comprises a base 30 directly engaging the seat of the connection 28. The seat 29 of the connection is provided with an annular rib 31 of triangular cross section which enters a notch 32 of corresponding formation provided in the under side of the base. A gasket or other similar packing 33 is interposed between the seat and the base.

The base is constructed with a central opening and a plurality of radiating troughs or pans 35, the troughs being open at the inner ends and being closed at their outer ends. Intermediate the troughs 35 the base is provided with a lurality of radiating air inlet openings 36 w ich extend from a point adjacent the center to a point adjacent the rim of the base, as shown in Figure 5. An annular shoulder 37 extends laterally'trom the upper marginal portion of the periphery or rim of the base and a lurality of lugs 38 extend upwardl an outwardly from the top of the rim 0 the base, the lugs being arranged in circumferential series about the rim.

A she/1140, preferably in the form of an inverted truncated cone, rests at its lower end upon the annular shoulder of the base and its inner wall is engaged by the series of lugs 38 to prevent lateral dis lacement.

A plurality of pairs of re ial plates 41 are arranged in the shell 40, there being one pair of plates for each trough. The plates are constructed of cast iron and are perforated so as to present a multiplicity of openings. The members of each pair of ill Add

Centrally of the top plate a hub 47 is plates are arranged on the opposite sides of the trough so that each trough is enclosed edges of the plates are received in slots 42 provided therefor in the inner wall of the shell 40, the inner ends being inturned and snugly abutting.

A top plate is associated'with the upper end of the shell 40 and has a plurality of depending lugs 46 which engage'the shell 40.

rovided and seats in notches 41 formed in the adjacent corners of the perforated plate 41. Overlying the fuel troughs and extending radially of the top plate are a plurality of slots or flame openings 49, the flame openings being of general sector formation.

A fuel-distributor includes a head 51 having a series of radiating outlets 52, one for each trough, and a depending inlet nipple 53 which extends down into the connection 28. The radiating outlets 52 extend into the troughs and supply the fuel thereto. In operation, the fuel flows from the tank 26 through the pipe 27 to the connection 28 and thence by means .of the fuel distributor into the troughs 30. In the troughs the fuel is vaporized. The air flows through the air inlet openings 36 and strikes the perforated plates by which it is broken up into jets and as such enters the chambers defined by the pairs of perforated plates wherein it encounters the oil vapors and mingles with them to form the combustible mixture.- The mixture thus formed burns with an evolution of a maximum degree. of heat and the flames incident to the combustion issue from the flame openings 4C9 and impinge upon the underside of the top and highlyheating it. The productions of combustion travel from the bowl or main fire chamber through the ofl'take or auxiliary fire chamber and therein serves to heat the remainder of the surface of the top of the stove.

It is to be noted that the perforated plates 41 are highly heated and they in turn impart their heat to the troughs. The heated troughs vaporize the oil and also preheat the air since the air must flow around these troughs on its way to the air inlet openings 36.

I claim:

1. A burner comprising a base having a plurality of radiating fuel troughs and air inlet openings intermediate the troughs, said base having a laterally extending annular shoulder and a series of upstanding lugs, a shell resting on the annular shou'lder and engaged by the lugs, a plurality of pairs of perforated plates arranged in the shell, the members of the pairs of plates being arranged on the opposite sides of the fuel troughs, said shell having slots in its inner wall receiving the outer ends of said plates,

and a top plate having radiating flame openings overlying said fuel troughs and'having a series of depending lugs engaging the shell and a central hub, said perforated plates being notched to accommodate said hub.

2. A burner comprising a base having a plurality of radiating fuel troughs and air inlet openings intermediate the troughs, a

shell supported on said base, a plurality of pans of perforated plates arranged in the shell, the members of the pairs of plates being arranged on the opposite, sides of the fuel troughs, said shell having slots in its inner wall receiving'the outer ends of said plates and a 'top .plate having radiatin flame openings overlying the said fue troughs and having a series of depending lugs engaging the shell and having a central hub, said perforated plates being notched to accommodate said central hub.

3. A burner comprising a base having a central fuel supply opening and a plurality of radiating uel troughs communicating with said central supply opening, said base also having a plurality of radiating air openings intermediate said troughs, an imperforate shell supported upon said base, a

plurality of pairs of perforated plates ar-.

ranged in the shell, the members of the pair of plates being arranged on the opposite sides of the troughs, and a top plate having radiating flame openings overlying the troughs.

4:. A burner comprising a base havin a plurality of radiating fuel troughs an a plurality of air inlet openings intermediate said troughs, a shell carried by the base, a plurality of pairs of plates arranged in the shell,-the members of the pairs of plates being arranged on the opposite sides of the troughs and each pair of plates serving to enclose the trough with which it is associated and a top plate having radiating flame openings overlying the troughs.

5, A burner comprising a base having a plurality of radiating fuel troughs and a plurality of air inlet openings intermediate saidtroughs, a shell carried bythe base, a plurality ofypairs of perforated plates arranged in the shell, the members. ofthe pairs of plates being arranged in the opposite sides of the troughs, the inneriends of opening at their inner ends into the central of plates being arranged on opposite sides of the troughs, a top plate having radiating flame openings overlying the troughs and a fuel distributor including a head having a 10 series of radiatin outlets extending into the inner open end of the troughs, said fuel distributor also having a depending inlet nipple extending down through the central opening of the base and communicating with 15 the connection.

ROBERT ASHLEY GRIM. 

